A B C D E F G H I J K L M N OP Q R S T U V W X Y Z
O Antiphons
(Catholic Encyclopedia)
O Deus Ego Amo Te
(Catholic Encyclopedia)
O Filii et Filiae
(Catholic Encyclopedia)
O Salutaris Hostia
(Catholic Encyclopedia)
O'Braein, Tighernach
(Catholic Encyclopedia)
O'Brien, Terence Albert
(Catholic Encyclopedia)
O'Bruadair, David
(Catholic Encyclopedia)
O'Callaghan, Edmund Bailey
(Catholic Encyclopedia)
O'Carolan, Torlogh
(Catholic Encyclopedia)
O'Connell, Daniel
(Catholic Encyclopedia)
O'Conor, Charles
The son of Irish immigrants, he was an eminent New York lawyer and orator. He defended Jefferson Davis and prosecuted Boss Tweed. Died 1884.
O'Conor, Charles
Called "the Venerable." Eighteenth-century Irish antiquarian.
O'Cullenan, Gelasius
(Catholic Encyclopedia)
O'Curry, Eugene
(Catholic Encyclopedia)
O'Daly, Daniel
(Catholic Encyclopedia)
O'Daly, Donogh Mór
(Catholic Encyclopedia)
O'Devany, Cornelius
(Catholic Encyclopedia)
O'Donnell, Edmund
(Catholic Encyclopedia)
O'Donovan, John
(Catholic Encyclopedia)
O'Dugan, John
(Catholic Encyclopedia)
O'Dwyer, Joseph
(Catholic Encyclopedia)
O'Fihely, Maurice
(Catholic Encyclopedia)
O'Growney, Eugene
(Catholic Encyclopedia)
O'Hagan, John
(Catholic Encyclopedia)
O'Hagan, Thomas
(Catholic Encyclopedia)
O'Hanlon, John
(Catholic Encyclopedia)
O'Hara, Theodore
(Catholic Encyclopedia)
O'Hely, Patrick
(Catholic Encyclopedia)
O'Herlahy, Thomas
(Catholic Encyclopedia)
O'Higgins, Ambrose and Bernard
(Catholic Encyclopedia)
O'Hurley, Dermond
(Catholic Encyclopedia)
O'Hussey, Maelbrighte
(Catholic Encyclopedia)
O'Leary, Arthur
(Catholic Encyclopedia)
O'Loghlen, Michael
(Catholic Encyclopedia)
O'Meara, Kathleen
(Catholic Encyclopedia)
O'Neill, Hugh
(Catholic Encyclopedia)
O'Neill, Owen Roe
(Catholic Encyclopedia)
O'Queely, Malachias
(Catholic Encyclopedia)
O'Reilly, Bernard
(Catholic Encyclopedia)
O'Reilly, Edmund (Theologian)
(Catholic Encyclopedia)
O'Reilly, Hugh
(Catholic Encyclopedia)
O'Reilly, John Boyle
(Catholic Encyclopedia)
O'Reilly, Myles William Patrick
(Catholic Encyclopedia)
O'Rorke, Patrick Henry
(Catholic Encyclopedia)
O'Sullivan Beare, Philip
(Catholic Encyclopedia)
Oakeley, Frederick
(Catholic Encyclopedia)
Oates's Plot
(Catholic Encyclopedia)
Oaths
(Catholic Encyclopedia)
Oaths, English Post-Reformation
(Catholic Encyclopedia)
Oaxaca
(Catholic Encyclopedia)
Obazine, Monastery of
(Catholic Encyclopedia)
Obba
(Catholic Encyclopedia)
Obedience
(Catholic Encyclopedia)
Obedience, Religious
(Catholic Encyclopedia)
Obedientiaries
(Catholic Encyclopedia)
Oblate Sisters of Providence
(Catholic Encyclopedia)
Oblates of Mary Immaculate
(Catholic Encyclopedia)
Oblates of Saint Francis de Sales
(Catholic Encyclopedia)
Oblati, Oblatae, Oblates
(Catholic Encyclopedia)
Obligation
(Catholic Encyclopedia)
Obregonians
(Catholic Encyclopedia)
Obreption
(Catholic Encyclopedia)
Occasionalism
(Catholic Encyclopedia)
Occasions of Sin
(Catholic Encyclopedia)
Occult Art, Occultism
(Catholic Encyclopedia)
Octavarium Romanum
(Catholic Encyclopedia)
Octave
(Catholic Encyclopedia)
Odense, Ancient See of
(Catholic Encyclopedia)
Odescalchi, Carlo
(Catholic Encyclopedia)
Odilia, Saint
Patroness of Alsace, d. 720, founded the convent of Hohenburg.
Odilo, Saint
Abbot of Cluny. He died in 1048.
Odin, John Mary
(Catholic Encyclopedia)
Odington, Walter
(Catholic Encyclopedia)
Odo of Cambrai, Blessed
Benedictine abbot, bishop of Cambrai, exiled for political reasons, d. 1113.
Odo of Canterbury
(Catholic Encyclopedia)
Odo of Cheriton
(Catholic Encyclopedia)
Odo of Glanfeuil
(Catholic Encyclopedia)
Odo, Saint
Second abbot of Cluny, died 942.
Odo, Saint
Benedictine monk, Archbishop of Canterbury, died in 959.
Oecolampadius, John
(Catholic Encyclopedia)
Oeconomus, Episcopal
(Catholic Encyclopedia)
Oecumenius
(Catholic Encyclopedia)
Oertel, John James Maximilian
(Catholic Encyclopedia)
Oettingen
(Catholic Encyclopedia)
Offa
(Catholic Encyclopedia)
Offerings
(Catholic Encyclopedia)
Offertory
(Catholic Encyclopedia)
Office of the Dead
Historical article on a special set of prayers for the deceased.
Ogdensburg, Diocese of
(Catholic Encyclopedia)
Oggione, Marco D'
(Catholic Encyclopedia)
Ogliastra
(Catholic Encyclopedia)
Ohio
(Catholic Encyclopedia)
Ohler, Aloys Karl
(Catholic Encyclopedia)
Oil of Saints
(Catholic Encyclopedia)
Ointment in Scripture
(Catholic Encyclopedia)
Ojeda, Alonso de
(Catholic Encyclopedia)
Okeghem, Jean d'
(Catholic Encyclopedia)
Oklahoma
(Catholic Encyclopedia)
Olaf Haraldson, Saint
Martyr and King of Norway, d. 1030.
Olah, Nicolaus
(Catholic Encyclopedia)
Olba
(Catholic Encyclopedia)
Old Catholics
(Catholic Encyclopedia)
Old Chapter, The
(Catholic Encyclopedia)
Old Hall (St. Edmund's College)
(Catholic Encyclopedia)
Oldenburg
(Catholic Encyclopedia)
Oldham, Hugh
(Catholic Encyclopedia)
Oldoini, Augustino
(Catholic Encyclopedia)
Olenus
(Catholic Encyclopedia)
Olesnicki, Zbigniew
(Catholic Encyclopedia)
Olier, Jean-Jacques
(Catholic Encyclopedia)
Olinda
(Catholic Encyclopedia)
Oliva
(Catholic Encyclopedia)
Oliva, Gian Paolo
(Catholic Encyclopedia)
Olivaint, Pierre
(Catholic Encyclopedia)
Oliver Plunket, Saint
Biographical article on the professor of theology, Archbishop of Armagh and Primate of All Ireland, martyred in 1681.
Oliver, George
(Catholic Encyclopedia)
Olivet, Mount
(Catholic Encyclopedia)
Olivetans
(Catholic Encyclopedia)
Olivi, Pierre Jean
(Catholic Encyclopedia)
Olivier de la Marche
(Catholic Encyclopedia)
Ollé-Laprune, Léon
(Catholic Encyclopedia)
Olmütz
(Catholic Encyclopedia)
Olympias, Saint
Widow, deaconess, renowned for her almsgiving, and a staunch supporter of St. John Chrysostom.
Olympus
(Catholic Encyclopedia)
Omaha, Diocese of
(Catholic Encyclopedia)
Ombus
(Catholic Encyclopedia)
Omer, Saint
Swiss-born bishop of Terouenne in Belgic Gaul, founder of a monastery. He died in about 670.
Omission
(Catholic Encyclopedia)
Omnipotence
(Catholic Encyclopedia)
Onias
(Catholic Encyclopedia)
Ontario
(Catholic Encyclopedia)
Ontologism
(Catholic Encyclopedia)
Ontology
(Catholic Encyclopedia)
Oostacker, Shrine of
(Catholic Encyclopedia)
Ophir
(Catholic Encyclopedia)
Oporto
(Catholic Encyclopedia)
Oppenordt, Gilles-Marie
(Catholic Encyclopedia)
Oppido Mamertina
(Catholic Encyclopedia)
Optatus, Saint
Fairly long essay on the life and writings of this bishop, who argued against the Donatists. He died in about 387.
Optimism
(Catholic Encyclopedia)
Option, Right of
(Catholic Encyclopedia)
Oracle
(Catholic Encyclopedia)
Oran
(Catholic Encyclopedia)
Orange Free State
(Catholic Encyclopedia)
Orange, Councils of
(Catholic Encyclopedia)
Orans
(Catholic Encyclopedia)
Orate Fratres
(Catholic Encyclopedia)
Oratorio
(Catholic Encyclopedia)
Oratory
(Catholic Encyclopedia)
Oratory of Saint Philip Neri, The
(Catholic Encyclopedia)
Orbellis, Nicolas d'
(Catholic Encyclopedia)
Orcagna
(Catholic Encyclopedia)
Orcistus
(Catholic Encyclopedia)
Ordeals
(Catholic Encyclopedia)
Ordericus Vitalis
(Catholic Encyclopedia)
Orders, Holy
(Catholic Encyclopedia)
Ordinariate
(Catholic Encyclopedia)
Ordinary
(Catholic Encyclopedia)
Ordines Romani
(Catholic Encyclopedia)
Oregon
(Catholic Encyclopedia)
Oregon City
(Catholic Encyclopedia)
Oremus
(Catholic Encyclopedia)
Orense, Diocese of
(Catholic Encyclopedia)
Oresme, Nicole
Article by Pierre Duhem on this medieval scientific thinker.
Organ
(Catholic Encyclopedia)
Oria
(Catholic Encyclopedia)
Oriani, Barnaba
(Catholic Encyclopedia)
Oriental Study and Research
(Catholic Encyclopedia)
Orientation of Churches
(Catholic Encyclopedia)
Orientius
(Catholic Encyclopedia)
Oriflamme
(Catholic Encyclopedia)
Origen and Origenism
Provides a biography and review of his works, as well as commentary on posthumous influences and the Origenistic Crises.
Original Sin
(Catholic Encyclopedia)
Orihuela
(Catholic Encyclopedia)
Oristano
(Catholic Encyclopedia)
Orkneys
(Catholic Encyclopedia)
Orlandini, Niccolò
(Catholic Encyclopedia)
Orley, Barent Van
(Catholic Encyclopedia)
Orléans, Councils of
(Catholic Encyclopedia)
Orléans, Diocese of
(Catholic Encyclopedia)
Orme, Philibert de l'
(Catholic Encyclopedia)
Oropus
(Catholic Encyclopedia)
Orosius, Paulus
(Catholic Encyclopedia)
Orphans and Orphanages
(Catholic Encyclopedia)
Orsi, Giuseppe Agostino
(Catholic Encyclopedia)
Orsini
(Catholic Encyclopedia)
Orsisius
(Catholic Encyclopedia)
Ortelius, Abraham
(Catholic Encyclopedia)
Orthodox Church
(Catholic Encyclopedia)
Orthodoxy
(Catholic Encyclopedia)
Orthodoxy, Feast of
(Catholic Encyclopedia)
Orthosias
(Catholic Encyclopedia)
Ortolano Ferrarese
(Catholic Encyclopedia)
Orval
(Catholic Encyclopedia)
Orvieto
(Catholic Encyclopedia)
Ory, Matthieu
(Catholic Encyclopedia)
Osaka
(Catholic Encyclopedia)
Osbald
(Catholic Encyclopedia)
Osbern
(Catholic Encyclopedia)
Oscott (St. Mary's College)
(Catholic Encyclopedia)
Osee
The prophet and his book.
Osimo
(Catholic Encyclopedia)
Oslo, Ancient See of
(Catholic Encyclopedia)
Osma, Diocese of
(Catholic Encyclopedia)
Osmund, Saint
A Norman by birth, Osmund became bishop of Salisbury, and died in 1099.
Osnabrück, Diocese of
(Catholic Encyclopedia)
Ossat, Arnaud d'
(Catholic Encyclopedia)
Ossory, Diocese of
(Catholic Encyclopedia)
Ostensorium (Monstrance)
(Catholic Encyclopedia)
Ostia and Velletri
(Catholic Encyclopedia)
Ostiensis
(Catholic Encyclopedia)
Ostracine
(Catholic Encyclopedia)
Ostraka, Christian
(Catholic Encyclopedia)
Ostrogoths
(Catholic Encyclopedia)
Oswald, Saint
King of Northumbria and martyr, d. 642.
Oswald, Saint
Archbishop of York, d. 992 while washing the feet of the poor, as was his daily custom during Lent.
Oswin, Saint
Biography of the king and martyr, who was murdered in 651.
Otfried of Weissenburg
(Catholic Encyclopedia)
Othlo
(Catholic Encyclopedia)
Othmar, Saint
First abbot of St. Gall. He died in prison in 759.
Otho, Marcus Salvius
Details on the reign of Roman Emperor.
Otranto
(Catholic Encyclopedia)
Ottawa, Archdiocese of
(Catholic Encyclopedia)
Ottawa, University of
(Catholic Encyclopedia)
Otto I (the Great)
(Catholic Encyclopedia)
Otto II
(Catholic Encyclopedia)
Otto III
(Catholic Encyclopedia)
Otto IV
(Catholic Encyclopedia)
Otto of Freising
(Catholic Encyclopedia)
Otto of Passau
(Catholic Encyclopedia)
Otto of St. Blasien
(Catholic Encyclopedia)
Otto, Saint
Swabian courtier, was named bishop of Bamberg in 1102, and founded over twenty monasteries.
Ottobeuren
(Catholic Encyclopedia)
Ouen, Saint
Seventh-century Archbishop of Rouen, founder of several monasteries, devoted to theological studies, friend of St. Eloi.
Our Lady of Good Counsel, Feast of
(Catholic Encyclopedia)
Our Lady of the Snow
(Catholic Encyclopedia)
Overbeck, Friedrich
(Catholic Encyclopedia)
Overberg, Bernhard Heinrich
(Catholic Encyclopedia)
Oviedo, Diocese of
(Catholic Encyclopedia)
Oxenford, John
(Catholic Encyclopedia)
Oxenham, Henry Nutcombe
(Catholic Encyclopedia)
Oxford
(Catholic Encyclopedia)
Oxford Movement, The (1833-1845)
Lengthy historical article on the Tractarian Movement includes information on John Henry Newman, as well as on other leading lights of this nineteenth-century Anglo-Catholic campaign, such as John Keble and Hurrell Froude.
Oxford, University of
(Catholic Encyclopedia)
Oxyrynchus
(Catholic Encyclopedia)
Ozanam, Antoine-Frédéric
(Catholic Encyclopedia)
Ozanam, Jacques
(Catholic Encyclopedia)
Ozias
(Catholic Encyclopedia)
Last update:
January 2, 2007 at 16:42:38 UTC
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